17994433274 has 4 divisors (see below), whose sum is σ = 26991649914. Its totient is φ = 8997216636.

The previous prime is 17994433273. The next prime is 17994433291. The reversal of 17994433274 is 47233449971.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 47233449971 = 1277 ⋅36987823.

It can be written as a sum of positive squares in only one way, i.e., 16720300249 + 1274133025 = 129307^2 + 35695^2 .

It is not an unprimeable number, because it can be changed into a prime (17994433273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4498608317 + ... + 4498608320.

Almost surely, 2^17994433274 is an apocalyptic number.

17994433274 is a deficient number, since it is larger than the sum of its proper divisors (8997216640).

17994433274 is an equidigital number, since it uses as much as digits as its factorization.

17994433274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8997216639.

The product of its digits is 4572288, while the sum is 53.

The spelling of 17994433274 in words is "seventeen billion, nine hundred ninety-four million, four hundred thirty-three thousand, two hundred seventy-four".